quantitative in situ plankton imaging and energetics


Project: Filter-feeding school of juvenile Clupea harengus in the BALTIC @ Flensburg Fjord on August 15 2000 15.58 in a micropach of plankton. Over 3 gigabyte of high resolution media with a resolution, that you can see the gills of the juveniles and the ecact location and dynamics of the opercular components and mouthparts - they will be evaluated for swimming speed of the individuals,  distance to neighbors, width and hight of the mouthopening in relation to bodylength, spreading of the operculum, distance travelled before clearing, time needed for clearing, angle in the water, speed and course changes in relation to the copepod-patch harvested. They will inflow in a biomathematical model of Clupea filter feeding under extreme prey conditions, also define the orientation strategy of schools: Synchrokinesis (see Tony Pitcher  "Teleost Behavior", our standard textbook, some mirrored @  http://www.ecoscope.com/pitcher.htm). Development and testwork performed @ the RUMFstation, construction and storage in Blake. For the work of evaluating the high resolution material we need an SGI workstation with some imaging related additions and subsystems, all in high resolution. It will carry an adjusted version of the dynIMAGE program developed with VOLKSWAGEN funding (ca. 250 000 US-dollar). New systems used in this venture are micro-engineered and tested off the Lifesaving Station for future missions below the ice of Antarctica. With the herring-ecomodel deriving from these evaluations it will be possible at a much higher definition level as currently available to budget energy-flow, carbon-dynamics and biodiversity parameters within the umbrella of the GLOBEC recommendations framework. This work follows the "New-Technology" recommendations we set up @ the GLOBEC meeting in Paris and the workshops in Norway and  Georgia.

single frame of the 50 frames per second optics - some school members swim with wide opened mouth side by side at the same speed for some distance - the synchronisation of this filterfeeding is currently evaluated on a supercomputer under aspects of synchroPredation and synchroKinesis -  click on the image to animate (under processing)

herring school at a distance in Kiel Fjord (Baltic) (MPEG1 0.7 Mb)

gravid males and females over a spawning bed already full of egs (white) (MPEG1 0.5 Mb)

herring school turnig at one of our transient bubble curtains (MPEG1 0.7 Mb)

Budgets used:

Project outline and first calibration imaging: 350 000 DM from BMFT

Instrumentation development: 500 000 DM from VOLKSWAGEN FOUNDATION

Testing and adjusting instruments: 60 000 DM from philanthropists

Transportation to the USA, tickets, small computers, connectivity:  220 000 US dollar from RUTGERS startup fund and instrumentation development fund

moderated by Uwe Kils

Copyright Karin & Bjoern & Uwe Kils


Institute of Marine and Coastal Sciences

Coastal and Arctic Oceanography Research Group